Slussen area in Stockholm, Södermanland, Sweden

Slussen area in the southern part of Stockholm city. The cloverleaf
roundabout, designed by the architect Tage William-Olsson, was
inaugurated in 1935. The two wooden towers to the right in the picture
were used for aircraft warning service during the Second World War.
View towards the Old Town.

Thank you all for your appreciation - we are happy to share the image with you! - And as an answer to and I can tell that the two wooden towers to the right in the picture was used for aircraft warning service during World War II. Stockholm City Museum - situated nearby the image - helped us find the correct answer. I've added the information to our photo datatabase. :)/Anna B.

When was the restaurant built and trees planted? (I presume it is a restaurant.) That should help with the date. The photo was probably taken from Katarinahissen (elevator), where there is now a webcam.

Here is a recent photo of the same view, from our photo database. Just as the old photo it's taken from the top of Katarinahissen, exactly as you suggested. The elliptical building (still missing in the photo above, from 1945), designed by the Swedish architect Arthur von Schmalensee, was built in 1954 as a port office. The building - called "Kolingsborg" - is today housing an architect's office and a night club. I don't now about the planting date of the very tall poplar trees though, but you still can't see them in a photo from Stockholm City Museum, taken in 1954. (But you can see the construction of the building in the same photo!)/Anna B.